UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Steps to reproduce the problem:
After I noticed this in the GCS documentation, I went ahead and tried it.

> x-goog-meta- fields can have data set to arbitrary Unicode values.

To confirm it worked, I checked Developer Tools.

What is the expected behavior?

What went wrong?
The header is shown like this.

x-goog-meta-heart: %e2%9d%a4

Did this work before? N/A 

Chrome version: 51.0.2704.106  Channel: stable
OS Version: Ubuntu 14.04
Flash Version: 

Whereas both curl and wget show it like this.

x-goog-meta-heart: ❤

I then checked the actual bytes sent for the value.

E29DA4

The value should either be shown as UTF-8 directly, or as raw bytes, but not URL escaped.